We all know what it is, when a character in some realm of fiction references something from real life (or at least that's the general definition of what I think it is). Examples of this are usually tutorials in games where a character says something like, "press X to select an action." Now why am I bringing this up? As usual I have a few questions for people to answer (and possibly point out my overwhelming stupidity). Why the fourth wall? Why does it need braking? I guess my real question is, where does the phrase come from?